Pour dry old-fashioned rolled oats in the slow cooker and 3 everyday additions to get a sweet treat so delicious. Your friends will be begging for more at the holiday block party!

This 4-ingredient slow cooker vintage oatmeal carmelita cake is one of those cozy, no-fuss desserts that tastes like it came from Grandma’s church cookbook. You literally pour dry old-fashioned rolled oats straight into the slow cooker, add just three everyday pantry staples, and let it bubble away into a gooey, caramel-scented treat. It’s perfect for holiday block parties, potlucks, or anytime you want something warm and sweet without turning on the oven or fussing with fancy steps.

Serve this oatmeal carmelita cake warm right out of the slow cooker, scooped into bowls. It pairs wonderfully with a scoop of vanilla ice cream, a dollop of whipped cream, or a drizzle of extra caramel sauce if you like things extra sweet. A hot cup of coffee, spiced tea, or cocoa makes it feel especially festive on chilly evenings. For a holiday block party, set the slow cooker on warm with a ladle and small bowls nearby, and offer toppings like chopped nuts, mini chocolate chips, or a sprinkle of flaky salt so everyone can dress up their own serving.

Servings: 8

3 cups old-fashioned rolled oats, dry

Lightly coat the inside of a 4- to 6-quart slow cooker with nonstick cooking spray or a thin layer of butter to help prevent sticking.

Pour the dry old-fashioned rolled oats evenly into the bottom of the slow cooker. Spread them out so they form a flat, even layer that completely covers the bottom.

Sprinkle the chocolate chips evenly over the dry oats so there are little pockets of chocolate scattered across the surface.

In a small bowl or measuring cup, whisk together the caramel sauce and melted butter until the mixture looks smooth and combined.

Slowly pour the caramel-butter mixture evenly over the oats and chocolate chips, trying to cover as much of the surface as possible. Do not stir; you want the oats on the bottom with the chocolate and caramel melting down through them as they cook.

Cover the slow cooker with the lid and cook on LOW for 2 1/2 to 3 hours, or until the edges are set and caramelized and the center is bubbly and thickened. The top will still look a bit gooey, more like a soft bar or spoon cake than a firm baked cake.

Turn off the heat and let the cake sit, covered, for about 15 to 20 minutes to thicken slightly and cool just enough to scoop easily.

Scoop the warm oatmeal carmelita cake into bowls and serve as is, or top with ice cream, whipped cream, or an extra drizzle of caramel. Keep the slow cooker on the WARM setting during a party so guests can help themselves.

For a nutty twist, sprinkle 1/2 cup chopped pecans or walnuts over the oats along with the chocolate chips before adding the caramel mixture. If you prefer things less sweet, use dark chocolate chips and a lightly salted caramel sauce, and consider reducing the chocolate chips to 3/4 cup. To add a little holiday flavor, stir 1 teaspoon of vanilla extract and 1/2 teaspoon of ground cinnamon into the caramel-butter mixture before pouring it over the oats. If you have picky eaters who don’t love visible oats, you can gently press the oats down with the back of a spoon after adding the caramel so they sink in a bit and create a more cohesive cake-like layer. For a slightly firmer, bar-style texture, turn off the slow cooker after cooking and let the cake cool uncovered for 30 to 40 minutes before scooping. Food safety tips: Always melt the butter in a microwave-safe dish or small saucepan and handle it carefully to avoid burns. Keep the slow cooker covered while cooking so the temperature stays consistent and the dessert heats evenly. Do not leave the slow cooker on the warm setting for more than 3 to 4 hours after cooking; refrigerate leftovers in a covered container once cooled, and reheat individual portions gently in the microwave until just warmed through.